1. The first guess is that the palm and the back of the hand are black and white, that is, three people rise from the palm and the back of the hand in turn, and different people jump first, for example, two black (the back of the hand) and one white (the palm) jump first.
4. Draw lots, take three pieces of paper, write jump, pull, pull, and jump first when drawing jump notes.
3. Three-color turntable. (It is in the book, so I won't introduce it. )
Although these three methods are effective, are there any loopholes in the actual operation of 1? Who draws lots first in the second game? Does the person who catches it first have an advantage? Relatively speaking, isn't the turntable fairer?
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